Non-inverting buck–boost converter with interleaved technique for fuel-cell system

Liao, Hsuan; Liang, Tsorng–Juu; Yang, Lung-Sheng; Chen, Jiann-Fuh

doi:10.1049/iet-pel.2011.0102

Cited by 69 publications

(33 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the application requirement, DC-DC buck-boost converters could be divided into 2 categories: isolated ones and non-isolated ones, ie, with or without transformer. [16][17][18][19][20] Two-switch buck-boost converters proposed in the literature [16][17][18] provide some advantages such as low component stress, high power fitness, and simple control technique. The first conventional buck-boost converter comes with only 1 switch.…”

Section: Introductionmentioning

confidence: 99%

A novel active‐clamp zero‐voltage‐switching buck‐boost converter

Hieu

Hsieh

Lin

et al. 2018

Circuit Theory & Apps

View full text Add to dashboard Cite

An active-clamp zero-voltage-switching (ZVS) buck-boost converter is proposed in this paper to improve the performance of converter in light load condition.By employing a small resonant inductor, the ZVS range of switches could be adjusted to very light load condition. Moreover, 2 clamping capacitors are added in the converter to eliminate the voltage spike on the switches during transition. The operating principle of the proposed converter is analyzed, and the optimal design guide for full range ZVS is also provided. A 60-W output prototype is experimentally built and tested in laboratory to verify the feasibility of proposed converter. The measured results show the critical ZVS operation of power switches at 1 and 0.7-W output power for buck and boost mode, respectively. The peak conversion efficiency is up to 92.3%.

show abstract

Section: Introductionmentioning

confidence: 99%

A novel active‐clamp zero‐voltage‐switching buck‐boost converter

Hieu

Hsieh

Lin

et al. 2018

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…In , transformerless high step‐up DC–DC converters are proposed. In , transformerless buck–boost DC–DC converter are proposed. In , a multi‐output buck–boost DC/DC converter is proposed.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency transformerless buck–boost DC–DC converter

Banaei

Bonab

2017

Circuit Theory & Apps

View full text Add to dashboard Cite

A novel high-efficiency transformerless buck-boost DC-DC converter is proposed in this paper. The presented converter voltage gain is higher than that of the conventional boost, buck-boost, CUK, SEPIC and ZETA converters, and high voltage gain can be obtained with a suitable duty cycle. The voltage stress across the power switch is low. Hence, the low on-state resistance of the power switch can be selected to decrease conduction loss of the switch and improve efficiency. The input current ripple in the presented converter is low. The principle of operation and the mathematical analyses of the proposed converter are explained. The validity of the presented converter is verified by the simulation results in PSCAD/EMTDC software and experimental results based on the prototype circuit with 250 W and 40 kHz.Although the flyback converter can obtain the high step-up voltage gain, the power switches suffer a voltage spike across the switches, and the converter efficiency is not high because of the reverserecovery problems and leakage inductor [10][11][12]. In [13,14], high voltage gain DC-DC converters with a coupled-inductor is proposed. The leakage inductance of the coupled inductor is so important that it cause high voltage spikes and adds the voltage stress. In [15], the switched capacitor method is used to obtain high step-up voltage gain. In [16], a high step-up bidirectional DC-DC converter with low voltage stress on the switch is proposed. In [17], a multi-input DC-DC converter is proposed to connect two power sources with a DC bus or load. The presented converter has high efficiency because of obtaining turn-on zero voltage switching (ZVS) of power switches. However, it requires a bidirectional port. In [18], a multi-port bidirectional DC-DC converter is proposed for DC micro grid. An integrated three-phase transformer is utilized to enhance the voltage level and isolate low voltage side and high voltage side. Therefore, the number of power switches is high, and hence, two input sources require to share a common ground. In [19], a high conversion ratio bidirectional DC-DC converter is proposed. However, this converter has five power switches which increase the conduction losses and the cost of the circuit and decrease the efficiency. In [20], a transformerless interleaved high step-down converter is proposed. But, in the presented converter, two power switches have been utilized, and the capacitors of the converter are suddenly charged. In [21], a buck-boost converter based on KY converter is proposed. In this converter, two main switches are used, and the voltage gain of the presented converter is 2D. In [22] a high step-up DC-DC converter based on ZETA converter is proposed. This converter has one power switch, and the energy of leakage inductor can be recycled. Hence, the efficiency is improved. In [23,24], transformerless high step-up DC-DC converters are proposed. In [25,26], transformerless buckboost DC-DC converter are proposed. In [27], a multi-output buck-boost DC/DC converter is proposed. This convert...

show abstract

“…This control method is called one mode control scheme. [12] Q1 and Q2 can also be controlled in other manners. For example, when the input voltage is higher than the output voltage, Q2 is always kept OFF, and Q1 is controlled to regulate the output voltage, and as a result, the TSBB converter is equivalent to a buck converter, and is said to operate in buck mode.…”

Section: Introductionmentioning

confidence: 99%

A PQ Improved High Efficiency, High Power Operated Single-Phase Variable Input Fed Two Switch Buck Boost Dc- Dc Converter

Saxena¹

2017

IJRASET

View full text Add to dashboard Cite

On the other hand, we can get a variable DC voltage from a fixed DC source by using DC-DC converter. There are so many types of dc-dc converters available, Buck converter-to get the reduced output voltage. Boost converter-to get the output voltage more than input. Buck-Boost-to do both the operations buck and boost. Normally, buck-boost converter consists of single switch to do both the operations buck and boost according to MATLAB simulation model of Buck Boost DC-DC converter, according to the duty cycle of the gate pulse. Single switch buck-boost converter produces an inverting output with respect to input. This is a disadvantage of this converter. To get a non-inverting output voltage the converter is designed with two switches one for buck operation and another one for boost operation. The two mode control is achieved by implementing the input feed forward method. According to the input voltage level, buck or boost switch is selected.[2], [3] There are two active switches in the TSBB converter, which provides the possibility of obtaining various control methods for this converter. If Q1 and Q2 (switches) are switched ON and OFF simultaneously, the TSBB converter behaves the same as the single switch buck-boost converter. This control method is called one mode control scheme.[12] Q1 and Q2 can also be controlled in other manners. For example, when the input voltage is higher than the output voltage, Q2 is always kept OFF, and Q1 is controlled to regulate the output voltage, and as a result, the TSBB converter is equivalent to a buck converter, and is said to operate in buck mode. On the other hand, when the input voltage is lower than the output voltage, Q1 is always kept ON, and Q2 is controlled to regulate the output voltage, and in this case, the TSBB converter is equivalent to a boost converter, and is said to operate in boost mode. Such control method is called two-mode control scheme. [13]

show abstract

Non-inverting buck–boost converter with interleaved technique for fuel-cell system

Cited by 69 publications

References 24 publications

A novel active‐clamp zero‐voltage‐switching buck‐boost converter

A novel active‐clamp zero‐voltage‐switching buck‐boost converter

High‐efficiency transformerless buck–boost DC–DC converter

A PQ Improved High Efficiency, High Power Operated Single-Phase Variable Input Fed Two Switch Buck Boost Dc- Dc Converter

Contact Info

Product

Resources

About